Breakup Reactions at Intermediate Energy

Abstract

Breakup reactions may be considered by a quasi-three-body model in which the two-body subsystems interact through optical model potentials with imaginary parts describing the excitation of unobserved channels. The distorted wave off-shell impulse approximation neglects only gradients of the optical model potentials. At sufficiently high energies it factorizes into a quantity describing the elementary two-body collision and a distorted wave transform of the bound-state wavefunction, which gives a distorted orbital momentum profile. Examples showing the validity of the approximation are given.